On Thu, Dec 02, 2010 at 12:19:39PM +0100, Michai Ramakers wrote: > looking for a way to have clean interface to my (PC) parallel port, I > saw ppbus(4). The manpage mentions user access to parallel ports can > be done using ppi(4), but I am lacking that manpage (NetBSD 5.1). > Googling for this turned up mails from around 2005 suggesting porting > ppi.c/.h (this is not the GPIB interface) from FreeBSD. > > What is at this moment the correct way to access parallel ports (as > separate I/O-pins) from userland? If no architecture-independent > interface exists (yet), i386 might be a fallback since I use that > exclusively.
We have gpio(4) attaching at ppbus(4), which will give you control of the parallel port pins. IIRC the gpio(4) interface is a bit clumsy, requiring a syscall for each pin you access, but it was good enough to drive a PIC programmer. Hans -- %SYSTEM-F-ANARCHISM, The operating system has been overthrown
